Vacuum fluid-circulating system.



S. L. CALVERT.

VACUUM FLUID CIRCULATING SYSTEM.

APPLxcATloN man ocr.19.'1911.v

2 sHvEE'Ts-SHEET 1.

Patented Feb. 26, 1918.

S. L. CALVERT. VACUUM FLUID CIHCULATING SYSTEM. APPLICATION man ocr. 19. 1911.

Patent E610. 26, 1918.

@SHEETS-SHEET 2.

5 L, Can/e rv@ @WW1/Hoz SEBASTIAN L. CALVERT, GF AUGUSTA, KANSAS.

VACUUM FLUD-CIRCLATNG SYSTEM.

escasos.

Specification of Letters Patent.`

raieniea nen. se, raie.

Application filed otober 19, 1917. Serial No. 197,438.

To all fio/1.0m t may concern.' y

Be it known that l, Snnasrninli; CALvnn'r, a citizen of the United States, residing at Augusta, in the county of Butler and `State of Kansas, have invented certain new and useful improvements in Vacuum Fluid Circulating Systems, of which the following a specification.

rl`his invention relates to vacuum fluid circulating systems for fluid cooled internal combustion engines and it is the dominant object of the invention to provide a construction covered in my co-pending U. S. application bearing Serial No. 186,793, whereby the cooling fluid will be caused to positively and quickly return to the supply tank or radiator, subsequently its circulation through the jacketed engine,thus allowing the same to be more quickly cooled for reintroduction into the engine jacket.

Another and equally important object of the invention is to provide means for preventing any overflow of water into the engine cylinders by way of the air intaking means of the air valve, thereby insuring proper functioning of the air valve at all times.

The foregoing together with additional advantageous details and arrangement of parts of the preferred embodiment of my invention will be clear from the specific description hereinafter contained when read in connection with the accompanying drawings forming part thereof, wherein said embodiment ofthe invention is illustrated for the purpose of facilitating a full understanding of the present improvements.

In the drawings Figure 1 is an end elevation of the im proved system,

Fig. 2 is a vertical section through the vacuum tank, and, y

Fig. 3 is a horizontal section therethrough.

Similar characters of reference refer to similar parts throughout the several views of the drawings.

Having more particular reference to the drawings, E represents the jacketed cylinder of a stationary internal combustion engine, the same having cooling fluid conveying conduits l and 2 engaged with the jackets thereof for anobvious purpose. A conduit 3 is connected to the conduit 2 hy means of a suitable elbow and extends into engagement With e fluid .Sur-.Plv taak t it being noted in this connection, that a check valve 5 is interposed in the said conduit 3, the purpose of which will be presently apparent. By so connecting the pipe 3 to the fluid supply tank t it will he readily understood that means are provided for conducting the cooling fluid to the jacket of the engine cylinder. Connected with the upper portion of the conduit 1 hy means of the conventional form of 'i'connection is a conduit 6, the remaining end of which is engaged with the top of the fluid supply tank 4t. A second "iconnection 7 is interposed in the conduit G and has an upright release pipe 8 engaged therewith, which pipe opens into the atmosphere.

A vacuum tank 9 is provided and has its lower end connected to the adjacent end of the conduit 1 while the upper end thereof has a 'l`connection 10 formed thereon, one branch of which recives the adjacent end of a ring angularly arranged conduit 11, which conduit in turn, extends into engagement with a fitting 12 having an air inlet valve 13 arranged in one of its branches. r1`he lower or remaining branch of the fitting 12 receives the upper end of a conduit 14 therein, the lower portion of which is arranged at substantially right angles thereto and pass into engagement with the engine air valve C, which air valve is provided with the usual mixer m.

As shown in Fig. 2 the vacuum tank 9 is formed of complemental sections having screw threaded flanges formed upon the adjacent portions thereof to facilitate assembling of the same. A guide 15 is arranged in the vacuum tank 9 and receives therethrough the rod 16 of a float 17, the upper end of the said rod carrying a valve 17 thereon adapted to normally seat upon the properly fitted portion 18 of the upper branch of the 'lconnection 10. Guidearms 19 may be and preferably are provided and slidably receive the upper end of the rod 16 therethrough, thereby insuring proper lmovement of the valve 17 with relation to its seat. Interposed in the conduit 6 is a check valve 20, the same serving as means for preventing the contents of the supply tank t from being effected by the partial vacuum created at times in the tank 9. In operation, upon the intake stroke of the piston working in the cylinder of the engine E a partial vacuum is established in the tank 9 thereby causing the cooling fluid.

to be circulated through the jacketed portion of the engine cylinder and drawn into the Vtank 9. Upon completion of the intake stroke, the partial Vacuum inv the tank 9 is lessened, thereby permitting'the cooling fluid to be discharged into the conduit 6 and from there into the supply tank 4. As the fluid level in the tank 9 raises it follows that the float 17 Will be raised thereby unseating` the kValve 17 and permitting the partial Vacuum to be instantly broken and the cooling fluid discharged intothe pipe 6 through the check 20. Further, the fluid ,Will be prevented from entering the pipe l1.

i the combination LWith the jacketed cylinder of anengine and air valve, of a fluid supply means, means for conducting the fluid from the supply to the jacketed cylinder, a vacuum tank communicating With the conducting means, other means for establishing come 1,25*?,sos

lnunication between the air intake valve and said vacuum tank, and a release valve interposed in a portion of the conducting means and opening into the atmosphere.

2. In a vacuum fluid circulating system, the combination With the jacketed Cylinder of an engine, of a fluid supply tank, means :for conducting the fluid from the supply tank to said cylinder, a vacuum tank communicating with the conducting means, the upper port-ion of said vacuum tank being open, a float valve in the tank engageable over the upper end thereof, and air conducting means communicating with said tank and said air valve.

3. In a vacuum fluid circulating system, the combination with the jacket-ed Cylinder of an engine and the air intake valve therefor, of'a fluid supply tank, means for conducting the fluid from said tank to the jacketed cylinder', a vacuum tank communicating with said conducting means, the upper end of the Vacuum tank being open, a float valve in said tank for normally closing said open upper end, air conducting means communieating with said tank and said air valve, and a release pipe interposed in portion of said fluid conducting means.

In testimony whereof, I allix my signature hereto.

SEBASTIAN L. CALV ERT.

.Copies of this patent may be obtainedor ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

